Receptacle mold



Jan 6, 1931. c. J. ME 1,781,593

REQEPTA LE; mom) Filed June 10, 1927 2 Sheets-Sheet l h- 43 y :5 a m I NVEN TOR.

Jan 6, 1931c c, 4. ZUBE LTBZSQB REGEPTACLE MOLD Filed'June 10, 192725heats-5heet 2 INVENTOR.

By M

Patented den. E5, 1931 rates ean-L J. zone, or DETROIT, MICHIGAN,ASSIGNOE, BY MnsNE AssTGniinNTsTo' THE OF DELAWARE V or DETROIT,trfcriiean, A CORPORATION REoErTeoLE Mom) Application filed June 10,1927. ,Serial No. 197,810.

This invention relates to receptacle molds, and'has more particularreference to molds of that type commonly employed for forming cellcontainers of electrical storage hatteries out of plastic. materials,such as rubber composition and the like.

The primary object of the invention is to provide simple and efiicientmeansfor impressing the desired exterior surface design upon thereceptacle or container during'the molding thereof, such meanspermitting ready change of the surface design as found necessary ordesirable;

A' more specific object is to provide simple and efficient means'forequipping the mold body with removable matrix plates by means of whichthe desired exterior surface design is imparted to the Walls of thecontainer during the molding operation. 7 I

A still further object is to so equip the mold body with the designimpressing matrix plates that the latter maybe readily removed from themold body with the molded receptacle or container, to be subsequentlyreadily stripped from the latter, without requiring formation of themold body of separable sections.

Still another object is to enable the provision of the mold body withremovable matrix plates so that thelatter are effectively sup ported inposition for use',the construction being extremely simple, and cheaplyand easily manufacturedJ r Other objects will become apparent as thenature of the invention is better understood,

and the same consists in the novel form,

combination and arrangement of parts here'- of a receptacle moldequipped with remova- I ble matrix plates in accordance with the pre entinvention, and operatively associated with the platens of a press;

F igure2 is a horizontal section taken sub stantially upon line 22 ofFigure 1;

Figure'3 is-a top plan viewofthe mold shown in Figure 1, wit the topplate and coresr'emoved; and p a Figure tis a longitudinal sectiontakensubstantially upon line t-4; of Figure 3'.-

The mold illustrated'in the accompanying drawings include-s a base plate5 having an upstanding'marginal flange 6 within which the'lower part ofthe mold body 7 is seated as is. well known in the art; The mold body 7is formed of a one-piece metal casting hav inga central opening ofproper size and shape to formthemold cavity withinwhich thecontainer orreceptacle 8 is molded, and the base plateois'formed with a separatecentral part or section9 concentric with but slightly smaller than themold cavity or opening so that the same may be pushed-upwardly forfacilitating removal of the receptacleS from the mold body after beingmolded'orsufliciently cured.

f 1 It is the usual practice to provide'molds of this type with a coverelement 9a and a plate" 10 having rigid depending cores 11 adapted to beentered into the element Qa and the moldcavity for pressing the plasticmaterialinto the desired shape, the mold being placed between the upperand lower platen's 12 and-13 0f a hydraulic or other press. By attachingthe cover or top plate 10 to the upper plate 12 ofthe press, the coresll, may be readilylowered and entered into the mold cavity of themoldbody 7 ,7 and during the pressing operation, the vulcanizationrcanbeeffected by the suitable application of heat as isalso well known: inthe art.

In accordance withthe present invention, the moldbody'i is formed withone or more internal relatively wide vertical. grooves or recesses 14;which'are of uniform depth and open through the top of the" moldbody,and

are also undercut atthe'sides 'as indicated at 15] Removably, andslidably fitted in these recesses1lare suitable matrix plates 16 whichgive or impartfthe desired exterior surface form to the molded containerand which may be readily let down into place or elevated and removed,andwhich will be. eflective'ly maintained in proper operative position whenin use, without the'employment of any separate 7 or extraneous fasteningmeans or devices.

'As shown, four matrix plates are preferably employed in molds forbattery cell con- 5 tainers, two of thematrix plates being arranged atand extendingentirely across the ends of the mold cavity as well asbeing shaped to form the rounded corners for the container.,There'maining two matrix plates are arranged at the sidesof themoldjcavity and provided with suitable irregular impression surfaces forformingthe desired exterior surface design upon the sides of the Vmolded container. I r

g5 lvhenthe receptacle has been sufliciently I cured, the'platens of thepress are separated a to remove the cores 11 from the'mold body. By thenpressing upwardly upon; the base plate section ,7, the molded receptaclemay be 20 readily removed from the mold cavity along with the designimpressing matrix plates, adhered thereto. This'removal'of the matrixplates along with the molded-container is permitted by reason of thefact that the re- .c'esses 14 open through the top of'the' mold body,and it will be apparent that upon removal of the containerfrom the moldbody such design-impressing matrix plates may be readily stripped fromthe molded container.

30 In this way the necessity of constructing the mold body of separablesections is avoided,

I and a number of different design impression matrix' plates may beinterchangeably employed with the mold body as will be asapparent. V V nThe recesses for the side matrix plates are 1 preferably undercut bymaking the same of' dove-tailform as shown in "Figurer2. In view oftheabove'it will be'seen that the,

1 present invention provides means whereby the surface design of anymolded product havinga flat or round surface may be readily changed ata'nominal cost. o

' Minor changesimaybe madevwithout de' i5 parting from the spiritand-scope 'of-the in vention as claimed.= j T V WhatIclaimasnewis: V 1.In a mold of the character described, a base plate, a one piece moldbody; having a 7 5o mold cavity with vertical open top grooves a formedin its Walls at the'sides and ends thereof, the sidegrooves being oflessilength' than the end grooves and spac'edtherefrom for the receptionof'matrix plates, and sepa 55 rate matrix plates fitting said groovesand removable therefrom through their open tops.

2. A mold as claimed'in claim 1, the base plate of which has avertically movable cen-' tral section forming the'bottom of the mold 760:cavity, and of less-area than the latter, wherev r by said section maybera is ed to facilitate re- ,moval of the molded article's.

In testimony-whereof I'afii'x my signature.

he, 7 -f 1 CARL JQZ BE; f

